ИСТИНА

Believes About Sleep Loss Predict Depression and Anxiety in Patients With Primary Insomnia After Adjusting for Subjective and Objective Sleep Introduction. Symptoms of anxiety and depression are common in chronic insomnia and could depend not only on sleep disturbances but on cognitive and emotional factors (Perlis et al., 2011). Objectives. The aim was to reveal cognitive predictors of anxiety and depression in primary insomnia beyond sleep quality. Methods. 62 patients with chronic primary insomnia filled checklists of reasons and ways of coping with insomnia (Rasskazova, Tkhostov, 2008), Hospital Scale of Anxiety and Depression (Zigmond, Snaith, 1983), Glasgow Content of Thoughts Inventory (Harvey, Espie, 2004), Dysfunctional Beliefs about Sleep Scale and Insomnia Severity Index (Morin, 1993). Objective sleep was registered using 1-night polysomnography. Results. Both depression and anxiety were unrelated to objective sleep (-.19 Conclusions. Treating depression and anxiety in chronic insomnia demands addressing subjective appraisal of sleep and reasons of insomnia. Intrinsic locus of control regarding reasons could be a factor of depression while fears secondary to lack of sleep predict general anxiety in patients with chronic insomnia. Research is supported by the Russian Foundation for Basic Research, project No. 17-06-00363.